a-Azido steroidal oximes have been cleaved to provide mono-and di-cyano derivatives under standard Beckmann conditions. The structures, reactions, and spectral characteristics of these products are discussed .

An efficient synthesis of the title benzopyranodione derivatives based on a Michael addition/cyclization sequence between 2-(1-hydroxyalkyl)-1,4-benzoquinones and enamines (or an imine) is described.

Synthesis of 1H-2-Benzopyran-5,8-dione Derivatives from 2-(1-Hydroxyalkyl)-1,4-benzoquinones and Enamines. -A synthesis of title compounds (III), (V) and (VII) based on a Michael addition/cyclization sequence between (I) and (II), (IV) and (VI), respectively, is described. -(KOBAYASHI*, K.; NOMURA, K.; OGATA, T.; TANMATSU, M.; MORIKAWA, O.; KONISHI, H.; Synthesis 2003, 5, 673-676; Dep. Mater. Sci., Fac. Eng., Tottori Univ., Koyama, Tottori 680, Japan; Eng.) -M. Paetzel 28-154

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Unter Beckmann‐Bedingungen erhält man aus dem Azidoketoxim (I) das Dinitril (II).